| /* |
| * libjingle |
| * Copyright 2015 Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include "talk/app/webrtc/androidvideocapturer.h" |
| |
| #include "talk/media/webrtc/webrtcvideoframe.h" |
| #include "webrtc/base/common.h" |
| #include "webrtc/base/json.h" |
| #include "webrtc/base/timeutils.h" |
| #include "webrtc/base/thread.h" |
| |
| namespace webrtc { |
| |
| using cricket::WebRtcVideoFrame; |
| using rtc::scoped_ptr; |
| |
| // An implementation of cricket::VideoFrameFactory for frames that are not |
| // guaranteed to outlive the created cricket::VideoFrame. |
| // A frame is injected using UpdateCapturedFrame, and converted into a |
| // cricket::VideoFrame with |
| // CreateAliasedFrame. UpdateCapturedFrame should be called before |
| // CreateAliasedFrame for every frame. |
| class AndroidVideoCapturer::FrameFactory : public cricket::VideoFrameFactory { |
| public: |
| FrameFactory(int width, int height) : start_time_(rtc::TimeNanos()) { |
| // Create a CapturedFrame that only contains header information, not the |
| // actual pixel data. |
| captured_frame_.width = width; |
| captured_frame_.height = height; |
| captured_frame_.pixel_height = 1; |
| captured_frame_.pixel_width = 1; |
| captured_frame_.rotation = 0; |
| captured_frame_.data = NULL; |
| captured_frame_.data_size = cricket::CapturedFrame::kUnknownDataSize; |
| captured_frame_.fourcc = static_cast<uint32>(cricket::FOURCC_ANY); |
| } |
| |
| void UpdateCapturedFrame(void* frame_data, |
| int length, |
| int rotation, |
| int64 time_stamp_in_ms) { |
| captured_frame_.fourcc = static_cast<uint32>(cricket::FOURCC_YV12); |
| captured_frame_.data = frame_data; |
| captured_frame_.elapsed_time = rtc::TimeNanos() - start_time_; |
| captured_frame_.time_stamp = |
| time_stamp_in_ms * rtc::kNumNanosecsPerMillisec; |
| captured_frame_.rotation = rotation; |
| captured_frame_.data_size = length; |
| } |
| |
| const cricket::CapturedFrame* GetCapturedFrame() const { |
| return &captured_frame_; |
| } |
| |
| cricket::VideoFrame* CreateAliasedFrame( |
| const cricket::CapturedFrame* captured_frame, |
| int dst_width, |
| int dst_height) const override { |
| // This override of CreateAliasedFrame creates a copy of the frame since |
| // |captured_frame_.data| is only guaranteed to be valid during the scope |
| // of |AndroidVideoCapturer::OnIncomingFrame_w|. |
| // Check that captured_frame is actually our frame. |
| DCHECK(captured_frame == &captured_frame_); |
| scoped_ptr<WebRtcVideoFrame> frame(new WebRtcVideoFrame()); |
| frame->Init(captured_frame, dst_width, dst_height); |
| return frame.release(); |
| } |
| |
| private: |
| uint64 start_time_; |
| cricket::CapturedFrame captured_frame_; |
| }; |
| |
| AndroidVideoCapturer::AndroidVideoCapturer( |
| rtc::scoped_ptr<AndroidVideoCapturerDelegate> delegate) |
| : running_(false), |
| delegate_(delegate.Pass()), |
| worker_thread_(NULL), |
| frame_factory_(NULL), |
| current_state_(cricket::CS_STOPPED) { |
| std::string json_string = delegate_->GetSupportedFormats(); |
| LOG(LS_INFO) << json_string; |
| |
| Json::Value json_values; |
| Json::Reader reader(Json::Features::strictMode()); |
| if (!reader.parse(json_string, json_values)) { |
| LOG(LS_ERROR) << "Failed to parse formats."; |
| } |
| |
| std::vector<cricket::VideoFormat> formats; |
| for (Json::ArrayIndex i = 0; i < json_values.size(); ++i) { |
| const Json::Value& json_value = json_values[i]; |
| DCHECK(!json_value["width"].isNull() && !json_value["height"].isNull() && |
| !json_value["framerate"].isNull()); |
| cricket::VideoFormat format( |
| json_value["width"].asInt(), |
| json_value["height"].asInt(), |
| cricket::VideoFormat::FpsToInterval(json_value["framerate"].asInt()), |
| cricket::FOURCC_YV12); |
| formats.push_back(format); |
| } |
| SetSupportedFormats(formats); |
| } |
| |
| AndroidVideoCapturer::~AndroidVideoCapturer() { |
| DCHECK(!running_); |
| } |
| |
| cricket::CaptureState AndroidVideoCapturer::Start( |
| const cricket::VideoFormat& capture_format) { |
| DCHECK(!running_); |
| DCHECK(worker_thread_ == nullptr || worker_thread_ == rtc::Thread::Current()); |
| // TODO(perkj): Better way to get a handle to the worker thread? |
| worker_thread_ = rtc::Thread::Current(); |
| |
| LOG(LS_INFO) << " AndroidVideoCapturer::Start w = " << capture_format.width |
| << " h = " << capture_format.height; |
| frame_factory_ = new AndroidVideoCapturer::FrameFactory( |
| capture_format.width, capture_format.height); |
| set_frame_factory(frame_factory_); |
| |
| running_ = true; |
| delegate_->Start( |
| capture_format.width, capture_format.height, |
| cricket::VideoFormat::IntervalToFps(capture_format.interval), this); |
| SetCaptureFormat(&capture_format); |
| current_state_ = cricket::CS_STARTING; |
| return current_state_; |
| } |
| |
| void AndroidVideoCapturer::Stop() { |
| DCHECK(worker_thread_->IsCurrent()); |
| LOG(LS_INFO) << " AndroidVideoCapturer::Stop "; |
| DCHECK(running_); |
| running_ = false; |
| SetCaptureFormat(NULL); |
| |
| delegate_->Stop(); |
| current_state_ = cricket::CS_STOPPED; |
| SignalStateChange(this, current_state_); |
| } |
| |
| bool AndroidVideoCapturer::IsRunning() { |
| return running_; |
| } |
| |
| bool AndroidVideoCapturer::GetPreferredFourccs(std::vector<uint32>* fourccs) { |
| fourccs->push_back(cricket::FOURCC_YV12); |
| return true; |
| } |
| |
| void AndroidVideoCapturer::OnCapturerStarted(bool success) { |
| DCHECK(worker_thread_->IsCurrent()); |
| cricket::CaptureState new_state = |
| success ? cricket::CS_RUNNING : cricket::CS_FAILED; |
| if (new_state == current_state_) |
| return; |
| current_state_ = new_state; |
| |
| // TODO(perkj): SetCaptureState can not be used since it posts to |thread_|. |
| // But |thread_ | is currently just the thread that happened to create the |
| // cricket::VideoCapturer. |
| SignalStateChange(this, new_state); |
| } |
| |
| void AndroidVideoCapturer::OnIncomingFrame(void* frame_data, |
| int length, |
| int rotation, |
| int64 time_stamp) { |
| DCHECK(worker_thread_->IsCurrent()); |
| frame_factory_->UpdateCapturedFrame(frame_data, length, rotation, time_stamp); |
| SignalFrameCaptured(this, frame_factory_->GetCapturedFrame()); |
| delegate_->ReturnBuffer(time_stamp); |
| } |
| |
| } // namespace webrtc |